A cut above many of the graters on the market today, Cuisipro's new, patented Surface Glide Technology has been specially designed to create a perfect balance between ease of grating and maximum slicing efficiency. A sturdy, beautifully designed and well-made kitchen tool which will give excellent service for many, many years. Dishwasher proof, though as with all good blades, hand-washing is preferable. Manufacturer's 25-year warranty on all Cuisipro graters.